Why Trust This Analysis
This article is part of our ongoing 5102(d) issues coverage, with 89 published articles analyzing 5102(d) issues issues across New York State. Attorney Jason Tenenbaum brings 24+ years of hands-on experience to this analysis, drawing from his work on more than 1,000 appeals, over 100,000 no-fault cases, and recovery of over $100 million for clients throughout Nassau County, Suffolk County, Queens, Brooklyn, Manhattan, and the Bronx. For personalized legal advice about how these principles apply to your specific situation, contact our Long Island office at (516) 750-0595 for a free consultation.
Understanding Medical Expert Requirements in New York No-Fault Cases
New York’s no-fault insurance law requires plaintiffs to meet a “serious injury” threshold under Insurance Law Section 5102(d) to pursue a personal injury lawsuit. This threshold demands more than just proving an injury occurred—it requires demonstrating that the injury meets specific statutory criteria. When a plaintiff’s medical condition shows improvement followed by deterioration, medical experts face heightened scrutiny from the courts.
The case of Rivera v Gonzalez illustrates a critical principle: medical experts cannot simply document changes in a patient’s condition without providing adequate explanation for those changes. This requirement becomes particularly important when objective signs of continuing disability appear inconsistent or when medical records show unexpected patterns of recovery and decline.
Courts demand thorough documentation and analysis from medical professionals, especially when examining patients years after an accident. Expert testimony must not only measure current limitations but also provide context for how and why those limitations developed or changed over time.
Jason Tenenbaum’s Analysis:
Free Consultation · No Fee Unless We Win
Does this apply to your situation?
Every case is different. Get a free, confidential case review from an experienced attorney who can tell you exactly where you stand.
Rivera v Gonzalez, 2013 NY Slip Op 04431 (1st Dept. 2013)
Plaintiff makes marked improvements and the deteriorates. Court in the 5102(d) setting requires an explanation.
“The affirmed reports of Dr. Shahid Mian, an orthopedist who examined plaintiff nearly two years after the accident, in March 2009, and again in 2011, are insufficient to raise an issue of fact because he failed to compare his measurements to normal ranges of motion (Toure v Avis Rent A Car Sys., 98 NY2d 345, 350 ; Soho v Konate, 85 AD3d 522, 523 ). Nor did he provide any explanation for any decrease in mobility following plaintiff’s improvement in 2007 (see e.g. Jno-Baptiste v Buckley, 82 AD3d 578 ).”
Key Takeaway
When pursuing a personal injury claim under New York’s no-fault law, medical experts must provide comprehensive explanations for any deterioration that occurs after documented improvement. Courts will not accept unexplained changes in condition, particularly when a plaintiff’s own medical records show inconsistent patterns of recovery and decline.
Legal Update (February 2026): Since this 2013 post, New York’s serious injury threshold requirements under Insurance Law Section 5102(d) may have been subject to regulatory amendments, updated medical examination protocols, or revised judicial interpretations regarding expert testimony standards. Practitioners should verify current provisions and recent case law developments when addressing medical expert requirements for deterioration patterns in no-fault cases.
Related Articles
Legal Context
Why This Matters for Your Case
New York law is among the most complex and nuanced in the country, with distinct procedural rules, substantive doctrines, and court systems that differ significantly from other jurisdictions. The Civil Practice Law and Rules (CPLR) governs every stage of civil litigation, from service of process through trial and appeal. The Appellate Division, Appellate Term, and Court of Appeals create a rich and ever-evolving body of case law that practitioners must follow.
Attorney Jason Tenenbaum has practiced across these areas for over 24 years, writing more than 1,000 appellate briefs and publishing over 2,353 legal articles that attorneys and clients rely on for guidance. The analysis in this article reflects real courtroom experience — from motion practice in Civil Court and Supreme Court to oral arguments before the Appellate Division — and a deep understanding of how New York courts actually apply the law in practice.
Keep Reading
More 5102(d) issues Analysis
Significant limitation v. permanent consequential, again
New York court ruling creates apparent contradiction in no-fault threshold requirements for significant limitation vs. permanent consequential limitation cases.
May 22, 2021
NY Serious Injury Threshold: When Suboptimal Effort Derails Personal Injury Cases
Learn how NY's serious injury threshold works and why suboptimal effort can destroy your personal injury case. Expert Long Island attorney guidance.
Nov 25, 2019
Second Department recognizes degeneration as a basis to move for summary judgment
Second Department clarifies that degenerative findings can support summary judgment dismissal when plaintiffs fail to adequately rebut pre-existing condition evidence.
Jul 25, 2018
A Wagman/Bradshaw foundation is necessary for EMG/NCV results
Appellate court ruling requires proper foundation for EMG/NCV electrodiagnostic test reports in personal injury cases under Wagman/Bradshaw standard.
May 13, 2016
Causation speculative after trial; 4404(a) motion granted and $200,000 jury verdict vacated
McDonald v Kohanfars: speculative causation after a jury verdict, corrected spinal-level chronology, and the CPLR 4404(a) ruling.
May 31, 2013
A Plaintiff's own hospital records defeated his own threshold summary judgment motion
Court examines how plaintiff's own hospital records contradicted expert testimony in no-fault threshold case, creating triable issues of fact.
Jun 5, 2010Was this article helpful?
Disclaimer: This article is published by the Law Office of Jason Tenenbaum, P.C. for informational and educational purposes only. It does not constitute legal advice, and no attorney-client relationship is formed by reading this content. The legal principles discussed may not apply to your specific situation, and the law may have changed since this article was last updated.
New York law varies by jurisdiction — court decisions in one Appellate Division department may not be followed in another, and local court rules in Nassau County Supreme Court differ from those in Suffolk County Supreme Court, Kings County Civil Court, or Queens County Supreme Court. The Appellate Division, Second Department (which covers Long Island, Brooklyn, Queens, and Staten Island) and the Appellate Term (which hears appeals from lower courts) each have distinct procedural requirements and precedents that affect litigation strategy.
If you need legal help with a 5102(d) issues matter, contact our office at (516) 750-0595 for a free consultation. We serve clients throughout Long Island (Huntington, Babylon, Islip, Brookhaven, Smithtown, Riverhead, Southampton, East Hampton), Nassau County (Hempstead, Garden City, Mineola, Great Neck, Manhasset, Freeport, Long Beach, Rockville Centre, Valley Stream, Westbury, Hicksville, Massapequa), Suffolk County (Hauppauge, Deer Park, Bay Shore, Central Islip, Patchogue, Brentwood), Queens, Brooklyn, Manhattan, the Bronx, Staten Island, and Westchester County. Prior results do not guarantee a similar outcome.
